	/*每个页面公共css */
	.df{
        display: flex;
      }
      .f1{
        flex:1
      }
      .fn{
        flex:none
      }
      .jcc{
        justify-content: center;
      }
      .aic{
        align-items: center;
      }
      .fdc{
        flex-direction: column;
      }
      .jcsb{
        justify-content: space-between;
      }
      .jcsa{
        justify-content: space-around;
      }
html,body{
  height: 100%;
  margin: 0;
  padding: 0;
}
#app{
  height: 100%;
}